:root{--bg:#0a0a0f;--surface:#13131b;--surface-2:#1a1a26;--line:#26263a;--violet:#8b5cf6;--cyan:#22d3ee;--text:#ececf2;--text-dim:#9a9ab0;--danger:#f87171;--radius:12px;--radius-lg:16px;--gap:12px;--font:-apple-system, BlinkMacSystemFont, "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Yu Gothic", Meiryo, "Segoe UI", Roboto, sans-serif}*{box-sizing:border-box}[hidden]{display:none!important}html,body{background:var(--bg);color:var(--text);font-family:var(--font);-webkit-text-size-adjust:100%;overscroll-behavior-y:none;margin:0;padding:0;font-size:15px;line-height:1.6}body{padding-bottom:calc(24px + env(safe-area-inset-bottom))}h1{letter-spacing:.02em;margin:0;font-size:16px;font-weight:700}p{margin:0}.topbar{z-index:20;padding:calc(10px + env(safe-area-inset-top)) 16px 10px;-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--line);background:#0a0a0fdb;align-items:center;gap:10px;display:flex;position:sticky;top:0}.brand-mark{background:linear-gradient(135deg, var(--violet), var(--cyan));border-radius:8px;flex:none;width:28px;height:28px}.brand-text p{color:var(--text-dim);font-size:11px;line-height:1.2}.badge{border:1px solid var(--line);background:var(--surface-2);color:var(--text-dim);border-radius:999px;margin-left:auto;padding:3px 8px;font-size:11px}main{flex-direction:column;gap:16px;max-width:1120px;margin:0 auto;padding:16px;display:flex}.dropzone{border:1.5px dashed var(--line);border-radius:var(--radius-lg);background:var(--surface);text-align:center;flex-direction:column;align-items:center;gap:8px;padding:32px 20px;transition:border-color .15s,background .15s;display:flex}.dropzone.is-over{border-color:var(--violet);background:var(--surface-2)}.dz-title{font-weight:600}.dz-or{color:var(--text-dim);font-size:12px}.dz-note{color:var(--text-dim);margin-top:4px;font-size:12px}body.is-drag-over:after{content:"ここに画像をドロップ";z-index:40;border:2px dashed var(--violet);border-radius:var(--radius-lg);color:var(--text);pointer-events:none;background:#0a0a0fc7;place-items:center;font-weight:600;display:grid;position:fixed;top:12px;bottom:12px;left:12px;right:12px}.workspace{flex-direction:column;gap:16px;display:flex}.strip-wrap{scrollbar-width:thin;align-items:center;gap:8px;padding-bottom:4px;display:flex;overflow-x:auto}.strip-wrap::-webkit-scrollbar{height:6px}.strip-wrap::-webkit-scrollbar-thumb{background:var(--line);border-radius:3px}.strip{gap:8px;display:flex}.thumb{border:2px solid var(--line);background:var(--surface-2);cursor:pointer;width:64px;height:64px;color:var(--text-dim);border-radius:10px;flex:none;place-items:center;padding:0;font-size:20px;display:grid;position:relative;overflow:hidden}.thumb canvas{object-fit:contain;width:100%;height:100%;display:block}.thumb.is-active{border-color:var(--violet)}.thumb.is-cut:after{content:"";background:var(--cyan);border-radius:50%;width:8px;height:8px;position:absolute;bottom:4px;right:4px}.thumb-add{border-style:dashed}.stage{flex-direction:column;gap:6px;display:flex}.canvas-wrap{border-radius:var(--radius-lg);border:1px solid var(--line);background:var(--surface);place-items:center;min-height:180px;display:grid;position:relative;overflow:hidden}#preview{width:auto;max-width:100%;height:auto;max-height:62vh;display:block}#preview.is-transparent{background-color:#1e1e2a;background-image:linear-gradient(45deg,#2a2a3a 25%,#0000 25%),linear-gradient(-45deg,#2a2a3a 25%,#0000 25%),linear-gradient(45deg,#0000 75%,#2a2a3a 75%),linear-gradient(-45deg,#0000 75%,#2a2a3a 75%);background-position:0 0,0 8px,8px -8px,-8px 0;background-size:16px 16px}.meta{color:var(--text-dim);text-align:center;font-size:12px}.overlay{z-index:60;-webkit-backdrop-filter:blur(4px);text-align:center;background:#0a0a0fe0;flex-direction:column;justify-content:center;align-items:center;gap:10px;padding:20px;font-size:13px;display:flex;position:fixed;top:0;bottom:0;left:0;right:0}.spinner{border:3px solid var(--line);border-top-color:var(--violet);border-radius:50%;width:28px;height:28px;animation:.8s linear infinite spin}@keyframes spin{to{transform:rotate(360deg)}}.bar{background:var(--surface-2);border-radius:3px;width:min(240px,80%);height:6px;overflow:hidden}.bar>div{background:linear-gradient(90deg, var(--violet), var(--cyan));width:0%;height:100%;transition:width .2s}.panel{border-radius:var(--radius-lg);border:1px solid var(--line);background:var(--surface);flex-direction:column;gap:14px;padding:16px;display:flex}.field{flex-direction:column;gap:8px;display:flex}.label{color:var(--text-dim);justify-content:space-between;align-items:baseline;font-size:12px;display:flex}.label output{color:var(--text);font-variant-numeric:tabular-nums}.row{flex-wrap:wrap;gap:8px;display:flex}.note{color:var(--text-dim);font-size:11px}.note:empty{display:none}.sep{border:0;border-top:1px solid var(--line);margin:2px 0}.btn{font:inherit;color:var(--text);background:var(--surface-2);border:1px solid var(--line);border-radius:var(--radius);cursor:pointer;-webkit-tap-highlight-color:transparent;justify-content:center;align-items:center;gap:8px;min-height:44px;padding:11px 14px;font-size:14px;font-weight:600;transition:filter .12s,border-color .12s;display:inline-flex}.btn:active{filter:brightness(1.25)}.btn:disabled{opacity:.45;cursor:default}.btn-wide{flex:1;width:100%}.btn-primary{background:linear-gradient(135deg, 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0;width:100%;height:28px;margin:0}.slider::-webkit-slider-runnable-track{background:var(--surface-2);border:1px solid var(--line);border-radius:3px;height:6px}.slider::-webkit-slider-thumb{-webkit-appearance:none;appearance:none;background:linear-gradient(135deg, var(--violet), var(--cyan));border:2px solid var(--bg);border-radius:50%;width:24px;height:24px;margin-top:-10px}.slider::-moz-range-track{background:var(--surface-2);border:1px solid var(--line);border-radius:3px;height:6px}.slider::-moz-range-thumb{background:linear-gradient(135deg, var(--violet), var(--cyan));border:2px solid var(--bg);border-radius:50%;width:22px;height:22px}.toast{left:50%;bottom:calc(20px + env(safe-area-inset-bottom));z-index:50;border-radius:var(--radius);border:1px solid var(--line);background:var(--surface-2);max-width:min(92vw,420px);color:var(--text);text-align:center;padding:11px 16px;font-size:13px;position:fixed;transform:translate(-50%);box-shadow:0 8px 24px #00000080}.toast.is-error{color:var(--danger);border-color:#40202a}@media (min-width:900px){.workspace{grid-template-columns:minmax(0,1fr) 320px;grid-template-areas:"strip strip""stage panel";align-items:start;display:grid}.strip-wrap{grid-area:strip}.stage{grid-area:stage}.panel{grid-area:panel;position:sticky;top:76px}#preview{max-height:70vh}}@media (prefers-reduced-motion:reduce){*{transition-duration:.01ms!important;animation-duration:.01ms!important}}